Spectra Precision Survey Pro CE v3.6 User Manual - Manual (Page 210)

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R-53
• 0LG 2UG : The distance between the curve and the chord at
the center of the curve’s length.
• ([WHUQDO : The minimum distance between the PI and the
curve.
Turn : specifies if the curve turns to the Left or Right as you face
the curve from the beginning.
;
Make this segment tangent to previous : When checked, the start
of the specified curve will be tangent to the ending tangent of the
previous segment.
$]LPXWK / %HDULQJ : is used to enter a known azimuth or bearing
at the start of the curve.
2. : adds the curve to the current horizontal alignment.
Edit Segment – Spiral Card
The Spiral card is used to add a spiral curve to the alignment.
Radius : is the radius of the spiral. (This equals
the radius of the horizontal curve tangent to the
spiral.)
Length : is the length of the spiral.
Turn : specifies if the curve turns to the Left or
Right as you face the curve from the beginning.
Dir : specifies if the curve runs from TS to SC
(Tangent to Spiral, to Spiral to Curve) or CS to
ST (Curve to Spiral, to Spiral to Tangent).